Match-board



- (No Model.)

J.. WRIGHT. MATCH BOARD.

No. 469,879. Patented Mar. 1 1892".

UNITED STATES PATENT OFFICE.

JOHN \VRIGHT, OF CLEVELAND, OHIO.

MATCH-BOARD.

SPECIFICATION forming part of Letters Patent No. 469,879, dated March 1,1892.

Application filed April 19, 1890.

To all whom it may concern: 7

Be it known that I, JOHN WRIGHT, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Match-Boards, of whichthe following, with the accompanying drawings, is a specification.

This invention relates to certain new and useful improvements inpat-tern or match boards. i

The invention consists in the peculiar construction of a combined sprueand arch gates radiating therefrom in pairs, whereby the molder isenabled to so mold and gate his patterns that in casting they may bepoured from a sprue common to one or more pairs of said patterns orgates and whereby the said sprue and gates may be simultaneouslywithdrawn from the flask before such flask is separated for the purposeof removing the patterns, and in the peculiar construction, arrangement,and combinations of the various parts, all as more fully hereinafter setforth, and pointed out in the claims.

Figure l is a plan of the cope side of my improved board, showing thesprue and gates in position preparatory to ramming, and whereon thereare arranged four patterns adapted to be poured from a sprue common tothe four radiating gates. Fig. 2 is a central cross-section on the line50 '00 in Fig. 1. Fig. 3. is a vertical section on the line .2 .2, Fig.2. Fig. 4: is a modification of the construction and arrangement shownin Fig. 1, and it illustrates the manner of gating patterns in singlepairs with a sprue common to the pair of gates employed.

In the accompanying drawings, which form a part of this specification,like letters refer to like parts in the various figures.

A represents a suitable board provided upon one face with theface-plates B, each of which is provided with the usual pit or well 0.Upon: the opposite or cope side of the board are rigidly secured thepatterns D, equal in number to the face-plates, and they are eachprovided with a core pit or well E.

In the center of the board, upon the cope side, is formed a recess toreceive a plate F,

Serial No. 348,663. (No model.)

the outer face of which is provided with an annular fillet G.

H represents the sprue, and to this sprue are rigidly secured theradiating arch gates I, equal in number to the number of patterns uponthe board. The lower end of the sprue when in place preparatory toramming is received within the annular fillet G, and the toes of thegates I are designed to rest upon the tops of the pits E, each of whichis provided with a fillet a and-within which the toes of the gates rest.Projecting from the drag side of the board and secured thereto is ahemispherical boss .I, the center of which is in alignment with thelongitudinal center of the sprue H.

In practice I ram up the cope and drag sides of the flask as in theordinary manner. After ramming the cope I draw out the sprue and itsattached gates, then separate the flask, remove the patterns and board,and again put the flask together, and all is ready for pouring. To thepractical operator it will readily be observed that the boss J forms awell, into which the molten metal is first poured and from which itflows up through the gates to the various patters within the flask, andit will be found that metal can be poured directly it comes from thecupola Without waiting for it to partially cool or come to an imaginarytemperature. The employment of the fillets obviates the necessity offingertrimming or blowing the mold after the patterns have been removed.

The construction above described is especially designed for use inmolding heavy or thick stove covers or plates; but in molding forordinary work the patterns 13, plate F, boss I, and the fillets G and amay be omitted in whole or in part, as may be desired, at the option ofthe molder.

In the modification shown in Fig. 4 the sprue H is provided with but twoarch gates located diametrically opposite each other. In the use of thisgate in molding a flask of fours it will be necessary to employ two setsof sprues and gates gating to the bottom of the pits of the patterns inparallel lines instead of upon lines radiating from a common center, asin the construction first described, and

while this would necessarily increase the labor in molding and pouringstill it would be purely within the spirit of my invention, whichconsists, primarily, in gating to the patterns in pairs with a doublearch gate pouring from a sprne common to one or more pairs of suchpatterns or gates.

What I claim as my invention is- 1. A pattern or match board providedwith a series of face-plates and patterns in pairs, in combination witha central sprite provided with a series of arch gates, said sprue andgates being adapted to be drawn before separating the cope and drag,substantially as set forth.

2. In combination, a pattern or match board provided with face-platesand patterns. in pairs, a series of. gates gating to and with a centralsprue, and a boss projecting from the drag side of the pattern-board,said boss being in alignment with the longitudinal center manner and forthe purpose specified.

In testimony whereof I affix my signature, in presence of two Witnesses,this 16th day of April, 1890.

JOHN WRIGHT.

Witnesses:

J. A. OSBORNE, II. S. SPRAGUE.v

